PHP 4, PHP 5, PHP 7, PHP 8
rewind - Rewind the position of a file pointer
rewind( resource$stream ): bool
Sets the file position indicator for stream to the beginning of the file stream.
If you have opened the file in append ("a" or "a+") mode, any data you write to the file will always be appended, regardless of the file pointer position.
The file pointer must be valid, and must point to a file successfully opened by fopen.
Returns true on success or false on failure.
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